Probing the transverse magneto-optical Kerr effect at the nanoscale

✍ Scribed by Alvarez-Prado, L.-M. ;Souche, Y. ;Carminati, R.

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 372 KB
• Volume: 204
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200675353

✦ Synopsis

Abstract

This article presents a theoretical formalism for a magneto‐optical scanning near‐field microscope (MO‐SNOM) in the transverse magneto‐optical Kerr effect configuration. Polarized light emitted by a nanosource is scattered by the magnetic object towards the detector. The nanosource is modelled as a circular aperture in an infinitely thin, perfectly conducting screen following the Bethe–Bouwkamp model. The theorem of reciprocity is used for calculating the detected signal in a constant‐height scanning mode for a Co thin film pattern. Two magnetic distributions are investigated: the single domain and the Bloch wall. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)